[Question] IF no file extension then add it

[RedPacketSec]

So i am building this thing and part of it sometimes will grab an image like below with no file extension as part of the name. however n8n can see what it is e.g png gif etc

How do I set a node that says:
If you see a file with no extension, then add the extension detected or default back to .png etc?

[jan]

That would currently only be possible with the Code-Node. There you can access the binary data + metadata. You can find information about the data structure here.

So instead of accessing and setting the json data you do the same for binary one.

For example:

$("Some Node").first().binary["binary key"].fileExtension